Gamut Expansion via Tunable Illuminants

The use of tunable-color illuminants to enhance the color gamut of
display devices was proposed and investigated. In particular,
flexible sub-wavelength dielectric gratings (SDGs) were investigated
as a possible means of realizing filters with a tunable transmission
spectrum. Modeling with rigorous coupled-wave analysis (RCWA)
showed a wide range of color tunability. However, tunability between
the intense colors ideal for forming large color gamuts was
limited. The effects of illuminant tuning on color density was also
investigated.